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126 lines
5.7 KiB
126 lines
5.7 KiB
/**************************************************************************** |
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* fs/nfs/nfs_mount.h |
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* |
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* Copyright (C) 2012 Gregory Nutt. All rights reserved. |
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* Copyright (C) 2012 Jose Pablo Rojas Vargas. All rights reserved. |
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* Author: Jose Pablo Rojas Vargas <jrojas@nx-engineering.com> |
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* |
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* Leveraged from OpenBSD: |
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* |
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* Copyright (c) 1989, 1993 |
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* The Regents of the University of California. All rights reserved. |
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* |
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* This code is derived from software contributed to Berkeley by |
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* Rick Macklem at The University of Guelph. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 4. Neither the name of the University nor the names of its contributors |
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* may be used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* |
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****************************************************************************/ |
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#ifndef __FS_NFS_NFS_MOUNT_H |
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#define __FS_NFS_NFS_MOUNT_H |
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/**************************************************************************** |
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* Included Files |
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****************************************************************************/ |
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/**************************************************************************** |
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* Pre-processor Definitions |
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****************************************************************************/ |
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#define NFSOP(nmp, op) (*nmp->nm_nfsops->nn_##op) |
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#define NFSHASOP(nmp, op) (nmp->nm_nfsops->nn_##op != NULL) |
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#define NFSDAT(nmp, nam) (nmp->nm_nfsops->nn_##nam) |
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/* Convert mount ptr to nfsmount ptr. */ |
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#define VFSTONFS(mp) ((struct nfsmount *)((mp)->i_private)) |
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/**************************************************************************** |
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* Public Types |
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****************************************************************************/ |
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/* Mount structure. |
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* One allocated on every NFS mount. |
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* Holds NFS specific information for mount. |
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*/ |
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struct nfsmount |
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{ |
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int nm_flag; /* Flags for soft/hard... */ |
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int nm_state; /* Internal state flags */ |
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struct inode *nm_mountp; /* Vfs structure for this filesystem */ |
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struct nfsnode *nfs_head; /* A list to all files opened on this mountpoint */ |
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bool nfs_mounted; /* true: The file system is ready */ |
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int nm_numgrps; /* Max. size of groupslist */ |
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nfsfh_t nm_fh; /* File handle of root dir */ |
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int nm_fhsize; /* Size of root file handle */ |
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struct rpcclnt nm_rpcclnt; /* rpc state */ |
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struct socket *nm_so; /* Rpc socket */ |
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int nm_sotype; /* Type of socket */ |
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int nm_soproto; /* and protocol */ |
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int nm_soflags; /* pr_flags for socket protocol */ |
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struct sockaddr *nm_nam; /* Addr of server */ |
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int nm_timeo; /* Init timer for NFSMNT_DUMBTIMR */ |
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int nm_retry; /* Max retries */ |
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int nm_srtt[4]; /* Timers for rpcs */ |
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int nm_sdrtt[4]; |
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int nm_sent; /* Request send count */ |
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int nm_cwnd; /* Request send window */ |
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int nm_timeouts; /* Request timeouts */ |
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int nm_deadthresh; /* Threshold of timeouts-->dead server */ |
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int nm_rsize; /* Max size of read rpc */ |
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int nm_wsize; /* Max size of write rpc */ |
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int nm_readdirsize; /* Size of a readdir rpc */ |
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int nm_readahead; /* Num. of blocks to readahead */ |
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int nm_acdirmin; /* Directory attr cache min lifetime */ |
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int nm_acdirmax; /* Directory attr cache max lifetime */ |
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int nm_acregmin; /* Reg file attr cache min lifetime */ |
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int nm_acregmax; /* Reg file attr cache max lifetime */ |
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unsigned char nm_verf[NFSX_V3WRITEVERF]; /* V3 write verifier */ |
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}; |
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/**************************************************************************** |
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* Public Function Prototypes |
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****************************************************************************/ |
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/* Prototypes for NFS mount operations: */ |
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int nfs_mount(struct inode *, const char *, void *); |
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int mountnfs(struct nfs_args *, struct inode *, char *, char *); |
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void nfs_decode_args(struct nfsmount *, struct nfs_args *, struct nfs_args *); |
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int nfs_start(struct inode *, int); |
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int nfs_unmount(struct inode *, int); |
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int nfs_root(struct inode *, struct file **); |
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int nfs_statfs(struct inode *, struct statfs *); |
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int nfs_sync(struct inode *, int); |
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int nfs_vget(struct inode *, ino_t, struct file **); |
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int nfs_fhtovp(struct inode *, struct fid *); |
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int nfs_vptofh(struct file *, struct fid *); |
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int nfs_fsinfo(struct nfsmount *, struct file *); |
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void nfs_init(void); |
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#endif
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